Propagation Steps Bromine adds to the double bond. 文· Hydrogen is abstracted from HBr. Br. Br H Chapter 8 Electrophile = 10 Chapter 8 10 Propagation Steps • Bromine adds to the double bond. + C Br C + H Br C Br C H Br Electrophile => C Br Br C C C + • Hydrogen is abstracted from HBr